(一)基本原理及结构几乎所有电机对于能量形式的转换都是可逆的,电力传动内燃机车的直流串激牵引电动机也是这样。当它从牵引发电机取得电能时便产生力矩,驱动机车牵引列车运行,即为牵引工况。当列车惯性惰行时,反过来牵引电动机电枢被车轮带动,此时若对电动机励磁绕组通 (A) the basic principles and structure Almost all of the motor for the conversion of the form of energy are reversible, electric drive diesel locomotive DC series traction motor as well. When it takes power from the traction generator, a torque is generated, which drives the traction of the locomotive, which is the traction condition. When the train inertia idly, in turn traction motor armature is driven by the wheels, at this time if the motor excitation winding through